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J. H. RAND.

INDEX. APPucMlqN'FILED-maza. 191s.l

Patented June 10, 1919.

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JMES H. 'i

n, or nonrn Ton'awanna, NEW Yoan.

INDEX.,

Specification of Letters Patent.

Patented inne ld, 1919.

Application filed August 23, 1918. Serial No. 251,073.

To (di whom 'it may concern.'

Be it known that l, JAMES H. RAND, a citizen of the United States ofAmerica, and resident of North Tonawanda, in the county of Niagara andState of New York, have invented -new and useful improvements inIndexes, of which the following is a specification.

This invention relates to indexes of the so-called overlapping card,yvisible index, type and consists in the novel features hereg inafterdescribed and particularly pointed out in the claims.

In the accompanying drawings which illustrate certain embodiments of theinvention.

Figure l is a front view of the index, parts being broken away,illustrating the preferred form of the invention;

Fig. 2 is a longitudinal central section through Fig. 1;

Fig. 3 is a cross section of the index frame shown in Figs. l and 2; and

Fig. 4 illustrates a modification in the construction of the frame.

The index frame, which is preferably made of sheet metal, comprises theback l, the side margins of which are bent over to form inwardlyextending flanges 2 forming opposed channels disposed lengthwise of theframe. Guide flanges 3 for the purpose hereinafter explained projectforwardly from the front face of the channel flanges. These guideflanges are preferably each formed of an angle strip of which one leg issecured to the frame, while the other leg projects from the face of thechannel flange at the outer edge of the frame and of the channel flangethus forming a guide flange at each side of the frame. Each such anglestrip, which may be mad'e of sheet metal bent as shown, preferably hasone leg 4 secured to the rear of the frame, with the other leg3constituting the guide flange extending across the side edge of theframe and forwardly beyond the face of the channel flange. The leg 4 ofthe strip is preferably made wider than the channel Bange 2 so that itmay be secured to the back of the frame at places not overlapped' by thechannel Hangs. This is desirable for the reason that the channel underflange 2 is so narrow that it would be dillicult to apply fasteningmeans within the channel. The member 4 may be secured to the back 1 ofthe frame by rivets, soldering, welding or other means, all of f pointin the series.

whichcan be applied more conveniently and effectively at an area notoverlapped by the flange 2..

The index elements supported by the frame consist of cards C havinglaterally projecting members a, adjacent to one mar-- gin and extendingunder and engaged by the channel flanges 2. The cards C are alsoprovided with laterally projecting members b on the free portion of thecards overlying the outer face of the channel flanges 2 at the innersides of the guide flanges 3. The cards are mounted in the frame in.overlapped spaced relation, as by providing each card with a tongue dformed from the bod'y of the card and bent rearwardly sufficiently toengage and support the lower edge of the next' adjacent card. Othermeans of mounting the cards in overlapped spaced relation with theirfree margins exposed for the purpose` of receiving index characters maybe used, and it will also be understood that the projections a and b,while shown as integral parts of the cards C, might lif desired beformed of separate pieces attached to the cards. The projections bresting on the front faces of the flanges 2 hold the cards at a slightinclination forward so that they may rbe readily grasped rand ,bentforward' for inspection or the/making of entries, and also hold thecards in convenient position for the insertion of additional cards atany It will be understood that the card's may be slid lengthwise of theframe for the purpose of inspecting, assembling or removing them. Theterm cards is used both in the specification and claims to denote notonly sheets of cardboard, but any similar index element made of anysuita'ble sheet material.

Any tendency of the cards to become displaced laterally from theirproper position in the frame, either accidentally of incidentally to themanipulation, will be obviated by the guide flanges 3, which engage theextremities of the projection b and hold the cards straight in theframe.

In the modification shown in Fig. -4 the angle strip which forms theguide flange has one leg 4 secured to the channel flange 2, instead ofthe back 1 of the frame as in the other form, while the guide flange 3acorresponde in position and function to guide lill inwardly extendingflanges forming opposed of cards mounted in the frame in overlappedspaced relation having laterally projecting members extending under andengaged by said channel flanges, and laterally projecting members on thefree portion of the cards overlying the outer face of said channelflanges at the -inner sides of the guide flanges, whereby the cards will'be guided by the guide flanges against lateral displacement.

2. An index comprising a frame having inwardly extending flanges formingopposed channels disposed lengthwise of the frame and guide flanges atthe outer edges of the frame projecting forwardly from the face of .thechannel flanges, and a Series of cards mounted in the frame inoverlapped spaced relation having laterally projecting members extendingunder and engaged by said 'channel flanges, and laterally projectingmembers on the free portiony of the cards overlying the outer face ofsaid channel flanges at the inner sides of the guide flanges, wherebyIthe cards will be guided by the guide flanges against lateraldisplacement.

3. An index comprising a frame having inwardly extending flanges formingopposed channels disposed lengthwise of the frame and guide flanges atthe outer edges of the channel danges projecting forwardly from the faceof the channel flanges, and a series of cards mounted in the frame inoverlapped spaced relation having laterally projecting members extendingunder and engaged by said channel flanges, and laterally projectingmembers on the free portion of the cards overlying the outer face ofsaid channel flanges at the inner. sides of the guide flanges, wherebythe cards will be guided by the guide flanges against lateraldisplacement.

4. An index frame having inwardly extending flanges forming opposedchannels disposed lengthwise of the frame, and guide flanges projectingforwardly from the face of the channel flanges.

5.' An index frame having inwardly extending flanges forming opposedchannels disposed lengthwise of the' frame, and guide flanges at theouter edges of the frame proj ecting forwardly from the face of thechannel flanges.

6. An index frame having inwardly extending flanges forming opposedchannels disposed lengthwise of the frame, and guide flanges at theouter edges of the vchannel flanges projecting forwardly from the faceof the channel flanges.

7. An index frame having inwardly extending flanges forming opposedChannels disposed lengthwise of the frame, and strips secured thereto,forming guide flanges projecting forwardly from the face of the channelflanges.

8. An index frame having inwardly extending .flanges forming opposedchannels disposed lengthwise of the frame, anda pair of angle strips,one leg of each o-f which is secured to the frame and the other leg ofwhich projects forwardly beyond the face of one of the channel flangesand. constitutes a guide flange.

9. An index frame having inwardly extending flanges forming opposedchannels disposed lengthwise of the frame, and a'pair of angle strips,one leg of each of which is secured to the rear of the frame and theother leg of which-extends across the side edge of the frame andforwardly beyond the face of the channel flange to form a guide flange.

l0. An index frame having inwardly extending flanges forniing opposedchannels disposed lengthwise of the frame, and a pair of angle strips,one leg of each of which is wider than the channel flange whereby it maybe secured to the lback of the frame at places not overlapped by thechannel flanges and the other leg of which extends across the side edgeof the frame and forwardly beyond the face of the channel flange to forma guide flange.

Signed by me at North Tonawanda, N. Y., this 16th day of August, 1918.

JAMES H. RAND.

